Loudness experiences?

[AndrewT]

Hi,

All properly calibrated THX preamp/processors are setup such that 0dB on the volume knob causes 0dBFS to produce 105dB SPL at the listening position.

Is it appropriate to expand this here or start a new thread?

Can a similar absolute level at the listener posistion be applied to dolby encoded recordings? or any other digital sources?

Does it imply that 105db is the maximum peak level that our systems should be listened to at ALL frequencies in the audio band? i.e THX are looking for 105db @20Hz from a compatible system and that we should not listen at levels exceeding this at any frequency.

[bentoronto]

In post #10 in a thread in subwoofers, I introduce some core puzzles related to the equal loudness compensation that seem to be overlooked.